Nuclear Gamma-soft Character in ¹²⁸Ba

Abstract

We report the properties of gamma soft O(6) of 128Ba isotones with neutron N = 72 using Interacting Vector Boson Model (IVBM), interacting Boson Model (IBM-1), Bohr-Mottelson Model (BM), and Doma-El-Gendy (D-G) relation. The first energy level ( ) and ratio have been investigated which show that 128Ba has gamma-soft character. The curves Eγ/Vs.J of E-GOS of even 128Ba nucleus were compared with the standard curves of vibrational, gamma soft and rotational limits. The staggering factors were studied of available measured data of 128Ba nucleus. The yrast levels of this isotope are calculated by the model of VBMI, IBM-1, BM and D-G and they were compared by measured data. The negative parity band of 128Ba was calculated by IVBM and BM model and compared with experimental values.

Comparative study between IVBM and IBM-2 models to calculate the energy levels for 162-16870Yb isotopes

“…Numerous tests can be used to predict the nucleus's dynamic symmetry, whether it is vibrational, rotational, or something in between [17,29]. In this Section, we will look at the ratios tests, such as R I/2 and R (I+2)/I .…”

“…Each model has strengths and weaknesses, and the choice of model depends on the specific properties of the nucleus being studied and the research question being addressed. In this paper, we have studied some properties of isotopes were done using IBM-2 and IVBM, while the calculations of negative parity band (NPB) states were conducted just using IVBM [17]. The results were compared with the measured values for these isotopes.…”